二氟化苯硼

Many of the Burgess specimens have now been assigned to living phyla just where Walcott put them in the first place. 许多布尔吉斯标本现在已经归到活着的动物的门里就是沃尔科特最初放置它们的地方。 Hallucigenia and s

发表于:2018-12-18 / 阅读(117) / 评论(0) 分类 万物简史

This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro

发表于:2018-12-24 / 阅读(95) / 评论(0) 分类 Scientific American(三)月

Fun Fact: Alligators Can Regrow Teeth 有趣的事实:短嘴鳄可以再长牙齿 Fun fact about alligators: they can regrow any of their eighty teeth up to fifty times. Which is pretty impressive, especially compared to us relatively dentally chal

发表于:2018-12-28 / 阅读(59) / 评论(0) 分类 初学者听力文摘精选

its time again for the A Moment of Science mailbag. A listener writes: Dear A Moment of Science, Ive always been fascinated by volcanoes. So I was wondering: How well can scientists predict when and where a volcano will erupt? Intersting question. Th

发表于:2018-12-31 / 阅读(55) / 评论(0) 分类 英语听力文摘 English Digest

New Report Shares Secrets of Rare Blue Diamonds History The Hope Diamond is one of the worlds most famous jewels. It was in the possession of a series of people: kings, bankers, rich women and thieves, before its arrival 60 years ago at the Smithsoni

发表于:2019-01-03 / 阅读(128) / 评论(0) 分类 2018年VOA慢速英语(八)月

This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ

发表于:2019-01-08 / 阅读(105) / 评论(0) 分类 Scientific American(四)月

Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the

发表于:2019-01-08 / 阅读(103) / 评论(0) 分类 Scientific American(十一)月

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(221) / 评论(0) 分类 英语新闻
学英语单词
accounting problem
aminobenzylation
ancestral names
angashores
aper
aperture compensator
argumentary
ARRIIDAE
atoner
aweye
Bambarra/ground nut
Bazardyuzyu, Gora
benzylamine-p-sulfonic acid
bibosity
blini
block coding
cancerfic
card doffer
Cecil Rhodes
clearing house stock
Clifford Odets
climatotheraphy
closing current
cobal
constitutional treatment
demotivating
depasse
dermolithic lava
Dick toxin
direct-current electrode negative
dora
einmal
ELSD
Engenho
error-deformation string
exchange supplementary duty
exon-florio
feaks
fluoro-cobalt-complex
fraked
freehold interest
gasbags
Goranu
hemocrinia
honyock
Huallaga, R.
infected with
intentionalist
kemfert
laser hologram
liquid waste filter
locking pulse
major leaguers
microsplenic
mismatches
monsterously
multi-tasked
Nokomai
noradrenalin(e)NA
OA (overall)
once-secret
optimum efficiency
osterman
penny loafer
pixie
Podocarpus forrestii
preliminary
putative proper law
realization and liquidation profit and loss account
Saksun
Salmo trutta
scrappages
search tool
Senna occidentalis
sexual sense
short changes
short range navigation
space flight
spring range of tide
stegostoma variurn
stenotherms
straight check valve
strongly coupled
subject analysis block
superpolyester
system customization
talk over sth with sb
tele.
terminal status word
theological doctrines
thyroid plexus
total effective temperature
tragopogon pratenses
trulove
vasoligate
vitropatic
voice operation demonstrator
wage-labor
water cooled crystallizer
wind sweep
withholding of the truth
xylylene